PEOPLE v HARTWICK

PEOPLE v TUTTLE

Docket Nos. 148444 and 148971. Argued January 15, 2015 (Calendar Nos. 5 and 6). Decided 

July 27, 2015.

Richard Lee Hartwick was charged in the Oakland Circuit Court with manufacturing 

marijuana and possessing it with the intent to deliver it. Hartwick was a registered qualifying 

patient under the Michigan Medical Marihuana Act (MMMA). He served as his own primary 

caregiver and the primary caregiver for five other registered qualifying patients to whom he was 

properly connected under the MMMA. The police, acting on a tip, confronted Hartwick and 

later conducted a consent search of his home where the police discovered a disputed number of 

marijuana plants and approximately 3.69 ounces of marijuana. Hartwick moved to dismiss the 

charges, claiming immunity under § 4 of the MMMA, MCL 333.26424, and the affirmative 

defense under § 8 of the MMMA, MCL 333.26428. In the alternative, Hartwick sought

permission to present a § 8 defense at trial. The trial court, Colleen A. O’Brien, J., denied the

motions. The Court of Appeals denied Hartwick’s delayed application for leave to appeal. The 

Supreme Court, in lieu of granting leave to appeal, remanded the case to the Court of Appeals for 

consideration as on leave granted. 493 Mich 950 (2013). The Court of Appeals, SAAD, P.J., and 

SAWYER, J. (JANSEN, J., concurring), affirmed the trial court. 303 Mich App 247 (2013). The 

Supreme Court granted leave to appeal in Docket No. 148444. 496 Mich 851 (2014). 

Robert Tuttle was charged in the Oakland Circuit Court with three counts of delivering 

marijuana, one count of manufacturing marijuana, one count of possessing marijuana with the 

intent to deliver it, and two counts of possession of a firearm during the commission of a felony. 

Tuttle was a registered qualifying patient under the MMMA who served as his own primary 

caregiver. It was unclear whether he was properly connected as the primary caregiver to one or 

two other registered qualifying patients. Tuttle was arrested for selling marijuana on three 

occasions to an individual with whom Tuttle was not properly connected under the MMMA. 

Tuttle claimed immunity under § 4 and the affirmative defense under § 8 of the MMMA. The 

trial court, Michael D. Warren, Jr., J., rejected both claims and denied Tuttle’s request to present 

a § 8 defense at trial. According to the court, immunity was not appropriate because Tuttle’s 

illegal conduct—selling marijuana to an individual outside the protection of the MMMA—

tainted Tuttle’s conduct with regard to the other charges. The trial court denied Tuttle use of the 

affirmative defense in § 8 because Tuttle failed to present prima facie evidence of each element 

of the defense. The Court of Appeals denied Tuttle’s application for leave to appeal. In lieu of 

Michigan Supreme Court

Lansing, Michigan

Syllabus Chief Justice:

Robert P. Young, Jr.

Justices:

Stephen J. Markman

Mary Beth Kelly

Brian K. Zahra

Bridget M. McCormack

David F. Viviano

Richard H. Bernstein

This syllabus constitutes no part of the opinion of the Court but has been 

prepared by the Reporter of Decisions for the convenience of the reader.

Reporter of Decisions:

Corbin R. Davis
granting Tuttle’s application for leave to appeal, the Supreme Court remanded the case to the 

Court of Appeals for consideration as on leave granted. 493 Mich 950 (2013). The Court of 

Appeals, SAAD, P.J., and SAWYER, J. (JANSEN, J., concurring), affirmed the trial court. 304 Mich 

App 72 (2014). The Supreme Court granted leave to appeal in Docket No. 148971. 496 Mich

851.

In a unanimous opinion by Justice ZAHRA, the Supreme Court held:

The availability of immunity under § 4 of the MMMA is a question of law to be decided 

before trial, and a defendant has the burden of proving by a preponderance of the evidence his or 

her entitlement to immunity. Immunity must be claimed for each charged offense, and the 

burden of proving immunity is separate and distinct for each offense. Conduct that is 

noncompliant with the MMMA with respect to one charged offense does not automatically rebut 

the presumption of medical use with respect to conduct relating to any other charged offenses. 

Rather, noncompliant conduct involved in one charged offense can negate otherwise compliant 

conduct involved in a separate charged offense if there is a nexus between the noncompliant and 

the otherwise compliant conduct. Raising an affirmative defense under § 8 of the MMMA 

requires a caregiver to present prima facie evidence of each element of the defense for him- or 

herself and for each registered qualifying patient to which the caregiver is connected. Having 

established a prima facie case, the defendant has the burden of proving each element by a 

preponderance of the evidence. A valid registry identification card does not create any 

presumption for purposes of § 8.

1. The lower courts erred by denying Hartwick § 4 immunity without properly making 

the factual determinations required by § 4. The Court of Appeals failed to recognize that the trial 

court did not make proper factual determinations on the elements of § 4, specifically, the number 

of plants Hartwick possessed. In addition, the trial court and the Court of Appeals erred by

concluding that Hartwick should have known his registered qualifying patients’ debilitating 

conditions, the amount of marijuana they needed, and the identities of their physicians. Section 4 

does not require that knowledge. To establish immunity under § 4 of the MMMA, the defendant 

must prove four elements by a preponderance of the evidence: (1) the defendant possessed a 

valid registry identification card; (2) the defendant complied with the requisite volume 

limitations in § 4(a) and § 4(b); (3) the defendant kept any marijuana plants in an enclosed, 

locked facility; and (4) the defendant was engaged in the medical use of marijuana. Under the 

MMMA, a defendant is presumed to be engaged in the medical use of marijuana if the defendant 

possesses a valid registry identification card and is not in violation of the volume limitations. 

The presumption is rebuttable by evidence that a defendant’s conduct was not for the purpose of 

alleviating a qualifying patient’s debilitating medical condition or its symptoms. If a 

presumption of medical use has been rebutted, the defendant may still prove by a preponderance 

of the evidence that the defendant’s conduct was in furtherance of the administration of 

marijuana to treat or alleviate a registered qualifying patient’s debilitating medical condition or 

symptoms associated with the debilitating medical condition under MCL 333.26423(f). The 

written certification necessary to obtain a registry identification card is not similar to a 

pharmaceutical prescription and satisfies none of the elements of a § 8 defense. People v 

Hartwick had to be remanded to the trial court for an evidentiary hearing to determine the 

number of plants in Hartwick’s possession and whether Hartwick was entitled to § 4 immunity.
2. The Court of Appeals properly held that Hartwick was not entitled to raise the 

affirmative defense under § 8 because he failed to present prima facie evidence of each element 

of the defense. A primary caregiver must provide prima facie evidence of all § 8(a) elements for 

him- or herself and for the registered qualifying patients to which he or she is connected under 

the MMMA. Specifically, Hartwick failed to provide evidence of a bona fide physician-patient 

relationship for himself, as a patient, and his connected patients, he failed to provide evidence 

that a physician conducted a full assessment of his and his patients’ medical histories and current 

medical conditions, and he failed to show that a physician determined that he and his patients 

had debilitating medical conditions that would likely benefit from the medical use of marijuana. 

Hartwick further failed to present prima facie evidence that the amount of marijuana he 

possessed was not more than was reasonably necessary to ensure its uninterrupted availability for 

the treatment of his and his patients’ debilitating medical conditions. Finally, Hartwick failed to 

present prima facie evidence that he and his patients were engaged in the use of marijuana for a 

medical purpose.

3. The Court of Appeals erred by concluding that Tuttle’s unprotected conduct with the 

unconnected individual tainted what might otherwise be protected conduct on which additional

separate charges were based. A defendant must raise the claim of § 4 immunity to each charged 

offense, the trial court must decide as a matter of law before trial whether to grant the 

defendant’s motion for immunity, and the defendant must prove immunity by a preponderance of 

the evidence each time immunity is raised. The defendant’s burden of proving entitlement to 

immunity is separate and distinct for each charged offense. MMMA-compliant conduct is not 

automatically tainted by the defendant’s improper conduct related to a different charged offense 

unless there is a nexus between the improper conduct and the otherwise proper conduct. People 

v Tuttle had to be remanded to the trial court for an evidentiary hearing to determine whether 

there was a nexus between the charges based on Tuttle’s improper conduct and the charges based 

on Tuttle’s otherwise proper conduct, in addition to other factual findings.

4. The Court of Appeals properly held that Tuttle could not claim the affirmative defense 

under § 8 because he failed to establish prima facie evidence of at least one of the elements of

the defense for each of his possibly connected patients. Specifically, Tuttle failed to provide 

evidence of the actual amount of marijuana needed to treat his patients; the evidence showed 

only the actual amount of marijuana each patient obtained from Tuttle. In addition, Tuttle failed 

to show that one patient had undergone a full medical assessment in the course of a bona fide 

physician-patient relationship.

Hartwick affirmed in part, reversed in part, and remanded to the trial court for an 

evidentiary hearing to determine Hartwick’s entitlement to § 4 immunity.

Tuttle affirmed in part, reversed in part, and remanded to the trial court for an evidentiary 

hearing to determine Tuttle’s entitlement to § 4 immunity.

©2015 State of Michigan
FILED July 27, 2015

S T A T E O F M I C H I G A N

SUPREME COURT

PEOPLE OF THE STATE OF MICHIGAN,

Plaintiff-Appellee,

v No. 148444

RICHARD LEE HARTWICK,

Defendant-Appellant.

PEOPLE OF THE STATE OF MICHIGAN,

Plaintiff-Appellee,

v No. 148971

ROBERT TUTTLE,

Defendant-Appellant.

BEFORE THE ENTIRE BENCH 

Michigan Supreme Court

Lansing, Michigan

OPINION Chief Justice:

Robert P. Young, Jr.

Justices:

Stephen J. Markman

Mary Beth Kelly

Brian K. Zahra

Bridget M. McCormack

David F. Viviano

Richard H. Bernstein
2

ZAHRA, J.

In 2008, the voters of Michigan passed into law a ballot initiative1 now codified as 

the Michigan Medical Marihuana2 Act (MMMA), MCL 333.26421 et seq. Unlike the 

procedures for the editing and drafting of bills proposed through the Legislature, the 

electorate—those who enacted this law at the ballot box—need not review the proposed 

law for content, meaning, readability, or consistency.3

 1 Under Article 2, § 9 of the 1963 Michigan Constitution, “[t]he people reserve to 

themselves the power to propose laws and to enact and reject laws, called the 

initiative . . . .” A voter initiative may be invoked by a relatively small number of 

registered voters. “To invoke the initiative . . . , petitions signed by a number of 

registered electors, not less than eight percent . . . of the total vote cast for all candidates 

for governor at the last preceding general election at which a governor was elected shall 

be required.” Const 1963, art 2, § 9.

2 The MMMA uses the variant “marihuana.” Throughout this opinion, we use the 

vernacular “marijuana” unless quoting from the statute. 

3 Members of the Legislature generally request that the Legislative Council, a bipartisan, 

bicameral body of legislators established in Article 4, § 15 of the 1963 Constitution of 

Michigan, see that bills to be proposed in their respective chambers are drafted. See 

Const 1963, art 4, § 15; MCL 4.1103; MCL 4.1105. The council oversees the Legislative 

Service Bureau. MCL 4.1105. The bureau has a director and staff, and maintains a 

legislative reference library containing material which may be of use in connection with 

drafting and editing proposed legislation. MCL 4.1106; MCL 4.1107. At the request of 

the members of the Legislature, the bureau drafts “bills and resolutions or amendments 

to, or substitutes for, bills and resolutions; draft[s] conference committee reports; and 

examine[s], check[s], and compare[s] pending bills with other pending bills and existing 

laws to avoid so far as possible contrary or conflicting provisions.” MCL 4.1108(a). In 

sum, the Legislature has a staff of experienced attorneys who work with the various 

legislators to develop and revise any manner of laws. After a bill is drafted and 

supported, the chambers of the Legislature may refer it to conference committees for 

additional review by legislators and the public. The Governor also has an opportunity to 

review bills before signing them into law. This extensive drafting process works to 

clarify language, limit confusion and mistakes, and in a general sense, ensure that enacted 

laws have a modicum of readability and consistency.
3

This lack of scrutiny in the lawmaking process is significant because initiatives 

such as the MMMA cannot be modified “except by a[nother] vote of the electors” or by a 

three-fourths vote of each chamber of the Legislature.

4 This constraint on Legislative 

power suggests that there can be matters of public policy so important to the people that 

they cannot be left in the hands of the elected legislators. But this constitutionally 

protected reservation of power by the people comes with a cost. The lack of procedural 

scrutiny in the initiative process leaves the process susceptible to the creation of 

inconsistent or unclear laws that may be difficult to interpret and harmonize. The 

MMMA is such a law. While the MMMA has been the law in Michigan for just under

seven years, this Court has been called on to give meaning to the MMMA in nine 

different cases.

5

 The many inconsistencies in the law have caused confusion for medical 

marijuana caregivers and patients, law enforcement, attorneys, and judges, and have

consumed valuable public and private resources to interpret and apply it. This confusion 

mainly stems from the immunity, MCL 333.26424 (§ 4), and the affirmative defense, 

MCL 333.26428 (§ 8), provisions of the MMMA. We granted leave in People v 

 4 See Const 1963, art 2, § 9.

5 The Court previously interpreted the MMMA in the following cases: People v Mazur, 

497 Mich ___; 854 NW2d 719 (2015); Ter Beek v City of Wyoming, 495 Mich 1; 846 

NW2d 531 (2014); People v Green, 494 Mich 865 (2013); People v Koon, 494 Mich 1; 

832 NW2d 724 (2013); State v McQueen, 493 Mich 135; 828 NW2d 644 (2013); People

v Bylsma, 493 Mich 17; 825 NW2d 543 (2012); People v Kolanek, 491 Mich 382; 817 

NW2d 528 (2012). This term, the Court granted leave in People v Hartwick, 496 Mich 

851 (2014), and People v Tuttle, 496 Mich 851 (2014).
4

Hartwick6 and People v Tuttle7 to once again consider the meaning and application of 

these two very important sections of the MMMA.

8

 6 In Hartwick, we directed the parties to address the following questions:

(1) whether a defendant’s entitlement to immunity under § 4 of the 

Michigan Medical Marihuana Act (MMMA), MCL 333.26421 et seq., is a 

question of law for the trial court to decide; (2) whether factual disputes 

regarding § 4 immunity are to be resolved by the trial court; (3) if so, 

whether the trial court’s finding of fact becomes an established fact that 

cannot be appealed; (4) whether a defendant’s possession of a valid registry 

identification card establishes any presumption for purposes of § 4 or § 8; 

(5) if not, what is a defendant’s evidentiary burden to establish immunity 

under § 4 or an affirmative defense under § 8; (6) what role, if any, do the 

verification and confidentiality provisions in § 6 of the act play in 

establishing entitlement to immunity under § 4 or an affirmative defense 

under § 8; and (7) whether the Court of Appeals erred in characterizing a 

qualifying patient’s physician as issuing a prescription for, or prescribing, 

marijuana. [Hartwick, 496 Mich at 851.]

7 In Tuttle, we directed the parties to address the following questions:

(1) whether a registered qualifying patient under the Michigan 

Medical Marihuana Act (MMMA), MCL 333.26421 et seq., who makes 

unlawful sales of marijuana to another patient to whom he is not connected 

through the registration process, taints all aspects of his marijuana-related 

conduct, even that which is otherwise permitted under the act; (2) whether a 

defendant’s possession of a valid registry identification card establishes any 

presumption for purposes of § 4 or § 8; (3) if not, what is a defendant’s 

evidentiary burden to establish immunity under § 4 or an affirmative 

defense under § 8; and (4) what role, if any, do the verification and 

confidentiality provisions in § 6 of the act play in establishing entitlement 

to immunity under § 4 or an affirmative defense under § 8. [Tuttle, 496 

Mich at 851-852.]

8 The same panel of the Court of Appeals presided over People v Hartwick and People v 

Tuttle.
5

For the reasons fully explained in this opinion regarding § 4, we hold: 

(1) entitlement to § 4 immunity is a question of law to be decided by 

the trial court before trial; 

(2) the trial court must resolve factual disputes relating to § 4 

immunity, and such factual findings are reviewed on appeal for clear error; 

(3) the trial court’s legal determinations under the MMMA are 

reviewed de novo on appeal;

(4) a defendant may claim immunity under § 4 for each charged 

offense if the defendant shows by a preponderance of the evidence that, at 

the time of the charged offense, the defendant

(i) possessed a valid registry identification card, 

(ii) complied with the requisite volume limitations of § 4(a) 

and § 4(b), 

(iii) stored any marijuana plants in an enclosed, locked 

facility, and 

(iv) was engaged in the medical use of marijuana;

(5) the burden of proving § 4 immunity is separate and distinct for 

each charged offense;

(6) a marijuana transaction by a registered qualifying patient or a 

registered primary caregiver that is not in conformity with the MMMA 

does not per se taint all aspects of the registered qualifying patient’s or 

registered primary caregiver’s marijuana-related conduct; 

(7) a defendant is entitled to a presumption under § 4(d) that he or 

she was engaged in the medical use of marijuana if the defendant has 

shown by a preponderance of the evidence that, at the time of the charged 

offense, the defendant

(i) possessed a valid registry identification card, and 
6

(ii) complied with the requisite volume limitations of § 4(a) 

and § 4(b);9

(8) the prosecution may rebut the § 4(d) presumption that the 

defendant was engaged in the medical use of marijuana by presenting 

evidence that the defendant’s conduct was not for the purpose of alleviating 

the registered qualifying patient’s debilitating medical condition;

(9) non-MMMA-compliant conduct may rebut the § 4(d) 

presumption of medical use for otherwise MMMA-compliant conduct if a 

nexus exists between the non-MMMA-compliant conduct and the otherwise 

MMMA-compliant conduct; 

(10) if the prosecution rebuts the § 4(d) presumption of the medical 

use of marijuana, the defendant may still establish, on a charge-by-charge 

basis, that the conduct underlying a particular charge was for the medical 

use of marijuana; and

(11) the trial court must ultimately weigh the evidence to determine 

if the defendant has met the requisite burden of proof as to all elements of 

§ 4 immunity.

Regarding § 8, we hold: 

(1) a defendant must present prima facie evidence of each element of 

§ 8(a) in order to be entitled to present a § 8 affirmative defense to a factfinder; 

(2) if the defendant meets this burden, then the defendant must prove 

each element of § 8(a) by a preponderance of the evidence; and 

(3) a valid registry identification card does not establish any 

presumption under § 8.10

 9 A valid registry identification card is a prerequisite to establish immunity under § 4. 

But possession of a valid registry identification card, alone, does not establish any 

presumption for the purpose of § 4. Further, the verification and confidentiality 

provisions in § 6(c) and § 6(h) do not establish that a defendant has engaged in the 

medical use of marijuana, or complied with the requisite volume and storage limitations 

of § 4. 

10 A valid registry identification card is prima facie evidence that a physician has 

determined the registered qualifying patient has a debilitating medical condition and will 
7

For the reasons stated in this opinion, and in accordance with the conclusions of 

law described above, we affirm in part, and reverse in part, the November 19, 2013 

judgment of the Court of Appeals in People v Hartwick.

11 We further remand Hartwick

to the trial court for an evidentiary hearing regarding Hartwick’s entitlement to immunity 

under § 4. In People v Tuttle, we affirm in part, and reverse in part, the January 30, 2014 

judgment of the Court of Appeals.12 We also remand Tuttle to the trial court for an 

evidentiary hearing regarding Tuttle’s entitlement to immunity under § 4.

I. STATEMENT OF FACTS

A. PEOPLE V HARTWICK

In late 2011, police officers in Oakland County received a tip regarding a 

marijuana growing operation at Hartwick’s home. Law enforcement officers confronted 

Hartwick, who admitted growing marijuana, but stated he was in compliance with the 

MMMA. After consenting to a search of his home, Hartwick led the police officers to a 

 

likely benefit from the medical use of marijuana to treat the debilitating medical 

condition. In addition, a valid registry identification card issued after April 1, 2013, the 

effective date of 2012 PA 512, is also prima facie evidence that a physician has 

conducted a full, in-person assessment of the registered qualifying patient. We reach this 

conclusion because § 6(c) requires the state to verify all the information contained in an 

application for a registry identification card; therefore, a valid registry identification card 

is prima facie evidence of anything contained in the application. This prima facie 

evidence satisfies two elements of § 8(a)(1), but does not satisfy the last element 

requiring prima facie evidence of a bona fide physician-patient relationship.

11 People v Hartwick, 303 Mich App 247; 842 NW2d 545 (2013).

12 People v Tuttle, 304 Mich App 72; 850 NW2d 484 (2014).
8

bedroom containing dozens of marijuana plants in varying sizes.13 The police officers 

also found a total of 104.6 grams—approximately 3.69 ounces—of usable marijuana in

the home.

The Oakland County Prosecutor charged Hartwick with manufacturing 20 to 200 

marijuana plants and possession with intent to deliver marijuana. Hartwick moved to 

dismiss those charges based on both the immunity (§ 4) and the affirmative defense (§ 8) 

provided in the MMMA. The trial court held an evidentiary hearing at which Hartwick 

was the only witness. Hartwick testified that he was a medical marijuana patient and his 

own caregiver,14 and a connected15 primary caregiver to five registered qualifying

patients. He submitted into evidence the registry identification cards for himself and the

 13 Hartwick alleges 71 plants were found, while the police allege he possessed 77 plants. 

Hartwick, 303 Mich App at 253-254, 259-260. Additionally, while this issue was not 

appealed, we note that Hartwick testified the door to the bedroom was locked before he 

unlocked it for the police, while the police allege it was unlocked when they arrived. 

14 We do not use the terms “patient” and “caregiver” in the traditional sense associated 

with a patient/medical provider relationship. Rather, we use these terms because they are 

used in the MMMA. Under the MMMA, a medical marijuana user, or “patient,” may 

elect to either manufacture marijuana for personal medical use or have someone else 

manufacture and supply marijuana to him or her. Such a supplier is known under the 

MMMA as a “primary caregiver.” We refer to the qualifying patient as being his or her 

“own caregiver” when the patient has not designated a primary caregiver. We use the 

terms “patient” and “caregiver” throughout this opinion simply to track the language of 

the MMMA and not to suggest that someone asserting a defense or immunity under the 

MMMA is a “patient” or “caregiver” as those terms are generally understood. Whether 

one is a “patient” or “caregiver” under the MMMA, as opposed to a supplier or user of 

illegal marijuana, is a question to be resolved on a case-by-case basis.

15 When a qualifying patient elects a primary caregiver, a registry identification card is 

also issued to the primary caregiver. When a qualifying patient has properly designated a 

primary caregiver under the MMMA, the primary caregiver is said to be “connected” to 

that particular qualifying patient.
9

five connected qualifying patients. Hartwick could not identify the debilitating 

conditions suffered by two of the qualifying patients statutorily connected to him. 

Further, Hartwick could not identify the certifying physician for any of the five connected 

qualifying patients.

The trial court concluded that Hartwick was not entitled to § 4 immunity. The 

court reasoned that Hartwick did not comply with the requirements of the MMMA 

because he did not know if the patients connected to him even had debilitating medical 

conditions.

16

The trial court similarly denied Hartwick’s motion to dismiss under § 8 and his 

motion in the alternative to present a § 8 affirmative defense to the jury. The court 

determined that Hartwick failed to present “testimony regarding a ‘bona fide physicianpatient relationship or a likelihood of receiving therapeutic or palliative benefit from the 

medical use of marijuana,’ or any testimony on whether defendant possessed no more 

marijuana than reasonably necessary for medical use.”17 Thus, Hartwick failed to 

establish his entitlement to a § 8 affirmative defense.

The Court of Appeals affirmed the trial court, rejecting Hartwick’s contention

“that his possession of a registry identification card automatically immunizes him from 

prosecution under § 4 and grants him a complete defense under § 8.”18 The Court of 

 16 An individual claiming § 4 immunity must comply with the requirement that marijuana 

be only for a medical use.

17 Hartwick, 303 Mich App at 255.

18 Id. at 251.
10

Appeals focused on the “primary purpose” of the MMMA, “which is to ensure that any 

marijuana production and use permitted by the statute is medical in nature and only for 

treating a patient’s debilitating medical condition.”19 

B. PEOPLE V TUTTLE

Tuttle was a registered qualifying patient and his own caregiver. He was also 

connected as a registered primary caregiver to at least one other registered qualifying 

patient.

20 On three separate occasions in early 2012, Tuttle sold marijuana to William 

Lalonde even though Tuttle was not formally connected to Lalonde under the MMMA. 

In addition to arresting Tuttle for providing marijuana to Lalonde, the Oakland County 

Sheriff’s Office searched Tuttle’s home where they found 33 marijuana plants, 38 grams 

of marijuana (approximately 1.34 ounces), and several weapons locked in a gun safe. 

Tuttle was subsequently charged with multiple counts related to the possession, delivery,

and manufacture of marijuana, as well as possession of a firearm during the commission 

of a felony.21

 19 Id.

20 At all relevant times, Tuttle was connected as a registered primary caregiver for 

Michael Batke. Additionally, Tuttle was at some point connected as a primary caregiver 

to Frank Colon. It is unclear whether Colon remained connected to Tuttle at the time of 

Tuttle’s offenses in this case. Colon may have renewed his MMMA card and listed 

himself as his own caregiver. Notwithstanding this possible inconsistency, Colon 

testified in the lower court that Tuttle supplied him with marijuana for his personal 

medical use. See pages 11and 12 of this opinion.

21 Counts I-III relate to Tuttle’s provision of marijuana to Lalonde. Counts IV-VII relate 

to the marijuana found in Tuttle’s home.
11

Tuttle attempted to invoke the immunity provided under § 4 for counts IV-VII

relating to possession of the marijuana in his home. Tuttle argued that he possessed a 

valid registry identification card and complied with the volume and storage limitations of 

§ 4(a) and § 4(b). The prosecution argued that Tuttle did not comply with the 

requirements of § 4 because Tuttle provided marijuana to Lalonde outside the parameters

of the MMMA. According to the prosecution, these transactions (for which Tuttle was 

charged in counts I-III) tainted all of Tuttle’s marijuana-related activity. The trial court 

agreed and denied Tuttle’s motion under § 4 for immunity and dismissal of the charges.

Tuttle then raised the § 8 affirmative defense to counts I-III. At an evidentiary 

hearing, Tuttle presented his registry identification card and the registry identification 

cards belonging to two allegedly connected qualifying patients: Michael Batke and Frank 

Colon. Lalonde, Batke, and Colon testified at the hearing. 

Lalonde testified that he was a registered qualifying patient who met Tuttle 

through an internet site that purported to match medical marijuana patients with

caregivers. Lalonde also testified that he told Tuttle he used marijuana to treat chronic 

pain. Batke testified that he was a registered qualifying patient and that Tuttle was

properly connected to him under the MMMA as a registered primary caregiver. Batke 

also testified that he would call Tuttle every time he needed marijuana, and Tuttle 

provided Batke with approximately two ounces of marijuana a month. Lastly, Colon 

testified that he was a medical marijuana patient, that he had a debilitating medical 
12

condition,22 and that he utilized Tuttle as a primary caregiver. Colon stated he requested

between one and two ounces of marijuana a week from Tuttle.

After the evidentiary hearing, the trial court determined that Tuttle did not present 

prima facie evidence for each element of § 8(a). Specifically, the trial court determined 

that Tuttle failed to present any evidence that the medical marijuana users to whom Tuttle 

was connected had physicians who “completed a full assessment of each patient’s 

medical history and current medical condition” as required by § 8(a)(1).

23 The court also 

concluded that Tuttle failed to establish a question of fact regarding whether the quantity 

of marijuana he possessed was reasonable under § 8(a)(2).24 The Court of Appeals 

affirmed the trial court and additionally concluded that Tuttle had not presented prima 

facie evidence as to Tuttle’s own medical use of marijuana under § 8(a)(3). 

Regarding § 4 immunity, the Court of Appeals concluded that providing marijuana 

to Lalonde tainted all of Tuttle’s marijuana-related conduct thereby negating Tuttle’s

ability to invoke § 4 immunity for any charge. Regarding the affirmative defense 

available under § 8, the Court of Appeals concluded that Tuttle’s registry identification 

card did not establish prima facie evidence of the required elements of § 8. The court 

 22 The physician’s statement indicates that Colon’s debilitating medical condition was 

shoulder and lower back pain. 

23 Tuttle, 304 Mich App at 79.

24 The trial court did find the testimony of Lalonde, Batke, and Colon credible as to their 

need for the medical use of marijuana to treat a debilitating medical condition under 

§ 8(a)(3). 
13

also concluded that the testimony of Tuttle’s patients was equally deficient in presenting 

prima facie evidence of those elements.

II. ANALYSIS

The possession, manufacture, and delivery of marijuana are punishable criminal 

offenses under Michigan law.25 Under the MMMA, though, “[t]he medical use of 

marihuana is allowed under state law to the extent that it is carried out in accordance with 

the provisions of th[e] act.”26 The MMMA grants to persons in compliance with its 

provisions either immunity from, or an affirmative defense to, those marijuana-related 

violations of state law. In the cases before us, we must resolve questions surrounding the 

§ 4 grant of immunity and the § 8 affirmative defense.

A. STANDARD OF REVIEW

We review questions of statutory interpretation de novo.

27 The MMMA was 

passed into law by initiative. We must therefore determine the intent of the electorate in 

approving the MMMA, rather than the intent of the Legislature.28 Our interpretation is 

ultimately drawn from the plain language of the statute, which provides “the most reliable 

evidence” of the electors’ intent.

29 But as with other initiatives, we place “special 

 25 See Kolanek, 491 Mich at 394 n 24.

26 MCL 333.26427(a).

27 Kolanek, 491 Mich at 393.

28 McQueen, 493 Mich at 147 (“ ‘[T]he intent of the electors governs’ the interpretation 

of voter-initiated statutes, just as the intent of the Legislature governs the interpretation of 

legislatively enacted statutes.”) (citation omitted).

29 Id. 
14

emphasis on the duty of judicial restraint.”30 Particularly, we make no judgment as to the 

wisdom of the medical use of marijuana in Michigan. This state’s electors have made 

that determination for us. To that end, we do not attempt to limit or extend the statute’s

words. We merely bring them meaning derived from the plain language of the statute.

B. SECTION 4 IMMUNITY

Section 4 grants broad immunity from criminal prosecution and civil penalties to 

“qualifying patient[s]”31 and “primary caregiver[s].”32 Subsection (a) specifically grants 

immunity to qualifying patients and states in relevant part:

(a) A qualifying patient who has been issued and possesses a registry 

identification card[33] shall not be subject to arrest, prosecution, or penalty

in any manner . . . for the medical use[34] of marihuana in accordance with 

 30 Schmidt v Dep’t of Ed, 441 Mich 236, 241-242; 490 NW2d 584 (1992).

31 The MMMA defines “qualifying patient” or “patient” as “a person who has been 

diagnosed by a physician as having a debilitating medical condition.” MCL 

333.26423(i).

32 The MMMA defines “primary caregiver” or “caregiver” as “a person who is at least 21 

years old and who has agreed to assist with a patient’s medical use of marihuana and who 

has not been convicted of any felony within the past 10 years and has never been 

convicted of a felony involving illegal drugs or a felony that is an assaultive crime . . . .” 

MCL 333.26423(h).

33 The MMMA defines “registry identification card” as “a document issued by the 

department that identifies a person as a registered qualifying patient or registered primary 

caregiver.” MCL 333.26423(j). The “department” is the “department of licensing and 

regulatory affairs.” MCL 333.26423(c).

34 “Medical use” is defined as “the acquisition, possession, cultivation, manufacture, use, 

internal possession, delivery, transfer, or transportation of marihuana or paraphernalia 

relating to the administration of marihuana to treat or alleviate a registered qualifying 

patient’s debilitating medical condition or symptoms associated with the debilitating 

medical condition.” MCL 333.26423(f).
15

this act, provided that the qualifying patient possesses an amount of 

marihuana that does not exceed 2.5 ounces of usable marihuana, and, if the 

qualifying patient has not specified . . . a primary caregiver . . . , 12 

marihuana plants kept in an enclosed, locked facility.

[35]

A registered qualifying patient, therefore, may possess up to 2.5 ounces of usable 

marijuana.36 Additionally, a registered qualifying patient may possess up to 12 marijuana 

plants, kept in an enclosed, locked facility, unless that patient specified a primary 

caregiver during the state registration process.37 Section 4 immunity also requires that 

the registered qualifying patient was engaged in the medical use of marijuana.

Similarly, § 4(b) provides immunity to registered primary caregivers. It states, in 

relevant part:

(b) A primary caregiver who has been issued and possesses a 

registry identification card shall not be subject to arrest, prosecution, or 

penalty in any manner . . . for assisting a qualifying patient to whom he or 

she is connected through the department’s registration process with the 

medical use of marihuana in accordance with this act. . . . This subsection 

applies only if the primary caregiver possesses an amount of marihuana that 

does not exceed:

(1) 2.5 ounces of usable marihuana for each qualifying patient to 

whom he or she is connected through the department’s registration process; 

and

 35 MCL 333.26424(a).

36 “Usable marihuana” is defined as “the dried leaves and flowers of the marihuana plant, 

and any mixture or preparation thereof, but does not include the seeds, stalks, and roots of 

the plant.” MCL 333.26423(k).

37 When a patient does not specify a primary caregiver through the state registration 

process, the patient is typically considered his or her own caregiver. When no primary 

caregiver is properly identified under the law, the patient has legal authority to possess up 

to 12 marijuana plants.
16

(2) for each registered qualifying patient who has specified that the 

primary caregiver will be allowed under state law to cultivate marihuana for 

the qualifying patient, 12 marihuana plants kept in an enclosed, locked 

facility; and

(3) any incidental amount of seeds, stalks, and unusable roots.

A primary caregiver, therefore, may only possess up to 2.5 ounces of usable marijuana 

and 12 marijuana plants in an enclosed, locked facility for each registered qualifying 

patient who has specified the primary caregiver during the state registration process. 

Similar to § 4(a), this section only applies if the primary caregiver is assisting a 

qualifying patient with the medical use of marijuana.

1. PROCEDURAL ASPECTS OF § 4

We begin our analysis of the procedural aspects of § 4 with the rather 

unremarkable proposition that entitlement to immunity under § 4 is a question of law. 

Immunity is a unique creature in the law and is distinguishable from other traditional 

criminal defenses. A successful claim of immunity excuses an alleged offender for 

engaging in otherwise illegal conduct, regardless of the sufficiency of proofs in the 

underlying case. This is consistent with the way claims of immunity are handled in other 

areas of law.

38 Moreover, the parties agree that § 4 immunity should be determined as a 

matter of law. There is no indication that the voters who enacted the MMMA intended to 

treat § 4 immunity differently than other claims of immunity. 

 38 Morden v Grand Traverse Co, 275 Mich App 325, 340; 738 NW2d 278 (2007)

(“Whether a defendant is entitled to qualified immunity is a question of law . . . .”); 

Snead v John Carlo, Inc, 294 Mich App 343, 354; 813 NW2d 294 (2011) (“[T]he 

determination regarding the applicability of governmental immunity and a statutory 

exception to governmental immunity is a question of law . . . .”). 
17

Our decision in Kolanek supports this conclusion. There we explained that § 4 

“ ‘grants qualifying patient[s]’ who hold ‘registry identification card[s]’ broad immunity 

from criminal prosecution, civil penalties, and disciplinary actions.”39 A registered 

qualifying patient, however, “who do[es] not qualify for immunity under § 4, as well as 

unregistered persons, are entitled to assert in a criminal prosecution the affirmative 

defense . . . under § 8 . . . .”40 By contrasting the broad grant of immunity in § 4 “from

prosecution” with the affirmative defense in § 8 “in a criminal prosecution,” we implied 

that the decision regarding entitlement to immunity must be made before trial. By its 

very nature, immunity must be decided by the trial court as a matter of law, and in 

pretrial proceedings, in order to establish immunity from prosecution. 

Deciding these questions of law necessarily involves resolving factual disputes. 

To determine whether a defendant is entitled to the § 4 grant of immunity, the trial court 

must make factual determinations, including whether the defendant has a valid registry 

identification card and whether he or she complied with the volume, storage, and medical 

use limitations. The expediency of having the trial court resolve factual questions 

surrounding § 4 underscores the purpose of granting immunity from prosecution.

Other matters routinely conducted in pretrial contexts, such as entrapment 

hearings, call for the trial court to act as both the finder of fact and arbiter of law.41 Like 

 39 Kolanek, 491 Mich at 394-395 (emphasis added).

40 Id. at 415 (emphasis added).

41 See People v Julliet, 439 Mich 34, 61; 475 NW2d 786 (1991) (opinion by BRICKLEY, 

J.) (entrapment determined by trial court); People v Jones, 301 Mich App 566, 575-576; 

837 NW2d 7 (2013) (discussing similarities between § 4 immunity hearings and 

entrapment hearings).
18

entrapment, § 4 immunity “is not a defense that negates an essential element of the 

charged crime. Instead, it presents facts that are collateral to the crime that justify barring 

the defendant’s prosecution.”42 We therefore conclude that the trial court must resolve 

factual disputes for the purpose of determining § 4 immunity.

Of course, the trial court’s determinations are not without review. Questions of 

law are reviewed de novo by appellate courts.43 A trial court’s factual findings are 

subject to appellate review under the clearly erroneous standard:

Findings of fact by the trial court may not be set aside unless clearly 

erroneous. In the application of this principle, regard shall be given to the 

special opportunity of the trial court to judge the credibility of the witnesses 

who appeared before it.[44]

We find no reason, nor have the parties offered any reason, to deviate from this 

model of appellate review. Therefore, we conclude that specific factual findings made by 

the trial court in a § 4 immunity hearing are reviewed under the clearly erroneous 

standard, and questions of law surrounding the grant or denial of § 4 immunity are 

reviewed de novo. Further, the trial court’s ultimate grant or denial of immunity is factdependent and is reviewed for clear error.45

 42 Julliet, 439 Mich at 52 (opinion by BRICKLEY, J.).

43 See People v Keller, 479 Mich 467, 473-474; 739 NW2d 505 (2007).

44 MCR 2.613(C).

45 See People v Johnson, 466 Mich 491, 497; 647 NW2d 480 (2002), citing People v 

Jamieson, 436 Mich 61, 80; 461 NW2d 884 (1990) (opinion by BRICKLEY, J.).
19

2. SUBSTANTIVE ASPECTS OF § 4

Section 4 provides a broad grant of immunity from criminal prosecution and civil 

penalties to registered qualifying patients and connected primary caregivers. As we have 

stated, the statute leaves much to be desired regarding the proper implementation of this 

grant of immunity. When addressing this question, we must consider (a) the evidentiary 

burden required to establish immunity and the presumption of medical use under § 4, (b) 

the elements required to establish immunity and the presumption of medical use, and (c) 

what evidence may properly rebut a presumption of medical use.

a. BURDEN OF PROOF

The MMMA is silent regarding the burden of proof necessary for a defendant to

be entitled to immunity under § 4. When statutes are silent as to the burden of proof, “we 

are free to assign it as we see fit, as long as we do not transgress the constitutional 

requirement that we not place on the defendant the burden of persuasion to negate an 

element of the crime.”46

Assigning the burden of proof involves two distinct legal concepts. The first, the 

burden of production, requires a party to produce some evidence of that party’s 

propositions of fact.47 The second, the burden of persuasion, requires a party to convince 

the trier of fact that those propositions of fact are true.48 The prosecution has the burden 

 46 People v Mezy, 453 Mich 269, 283; 551 NW2d 389 (1996), citing Patterson v New 

York, 432 US 197; 97 S Ct 2319; 53 L Ed 2d 281 (1977).

47 See McCormick, Evidence (7th ed), § 336, pp 644-645.

48 Id. Some courts have conflated the burden of proof with the burden of persuasion or 

the burden of production. See Director, Office of Workers’ Comp Programs v Greenwich 

Collieries, 512 US 267, 272-276; 114 S Ct 2251; 129 L Ed 2d 221 (1994) (referring to 
20

of proving every element of a charged crime beyond a reasonable doubt.49 This rule of 

law exists in part to ensure that “there is a presumption of innocence in favor of the 

accused . . . and its enforcement lies at the foundation of the administration of our 

criminal law.”50 To place the burden on a criminal defendant to negate a specific element 

of a crime would clearly run afoul of this axiomatic, elementary, and undoubted principle 

of law.51

A defendant invoking § 4 immunity, however, does so without regard to any 

presumption of innocence. The defendant does not dispute any element of the underlying 

charge when claiming immunity. Indeed, the defendant may even admit to otherwise 

unlawful conduct and yet still be entitled to § 4 immunity. When claiming § 4 immunity, 

the defendant places himself in an offensive position, affirmatively arguing entitlement to 

§ 4 immunity without regard to his or her underlying guilt or innocence of the crime 

charged. In People v D’Angelo, we determined that the accusatorial nature of a 

defendant’s request for a defense of entrapment, without regard to his or her guilt or 

innocence of the underlying criminal charge, required the burden of proof by a 

 

the “burden of proof” as the “burden of persuasion”). But these are different concepts. 

The burden of proof, which may also be generally referred to as a party’s evidentiary 

burden, refers both to a party’s burden to provide actual evidence of alleged facts and a 

party’s burden to persuade the trier of fact as to the veracity of those facts.

49 See People v Crawford, 458 Mich 376, 389; 582 NW2d 785 (1998) (“[T]he 

prosecution must carry the burden of proving every element beyond a reasonable 

doubt . . . .”).

50 Coffin v United States, 156 US 432, 453; 15 S Ct 394; 39 L Ed 481 (1895).

51 Id.
21

preponderance of the evidence to be allocated to the defendant.52 The accusatorial nature 

of an entrapment defense and the offensive nature of immunity are similar because in 

both the defendant posits an affirmative argument, rather than defending a particular 

charge. We now follow this well-established rule of criminal procedure and assign to the 

defendant the burden of proving § 4 immunity by a preponderance of the evidence. 

b. ELEMENTS REQUIRED TO ESTABLISH IMMUNITY

A defendant may claim entitlement to immunity for any or all charged offenses. 

Once a claim of immunity is made, the trial court must conduct an evidentiary hearing to 

factually determine whether, for each claim of immunity, the defendant has proved each

element required for immunity. These elements consist of whether, at the time of the 

charged offense, the defendant:

(1) was issued and possessed a valid registry identification card,

(2) complied with the requisite volume limitations of § 4(a) and § 4(b),

(3) stored any marijuana plants in an enclosed, locked facility, and

(4) was engaged in the medical use of marijuana.53

The court must examine the first element of immunity—possession of a valid 

registry identification card—on a charge-by-charge basis. In most cases, satisfying the 

first element will be an all-or-nothing proposition. A qualifying patient or primary 

caregiver who does not have a valid registry identification card is not entitled to 

immunity because the first element required for immunity cannot be satisfied. 

 52 People v D’Angelo, 401 Mich 167, 180, 183; 257 NW2d 655 (1977).

53 MCL 333.26424(a)-(b).
22

Conversely, a qualifying patient or primary caregiver satisfies the first element of 

immunity if he or she possessed a valid registry identification card at all times relevant to 

the charged offenses. In some cases, there may be a gap between a qualifying patient’s or 

a primary caregiver’s earliest conduct underlying the charged offenses and his or her 

most recent conduct. A court must pay special attention to whether the effective date or 

expiration date of a registry identification card occurred within this gap and determine 

whether the conduct occurred when the patient or caregiver possessed a valid registry 

identification card. A qualifying patient or primary caregiver can only satisfy the first 

element of immunity for any charge if all conduct underlying that charge occurred during 

a time when the qualifying patient or primary caregiver possessed a valid registry 

identification card.

Generally, the second and third elements of immunity are also all-or-nothing 

propositions. The second element—the volume limitations of § 4(a) and § 4(b)—requires 

that the qualifying patient or primary caregiver be in possession of no more than a 

specified amount of usable marijuana and a specified number of marijuana plants. When 

a primary caregiver is connected with one or more qualifying patients, the amount of 

usable marijuana and the number of plants is calculated in the aggregate—2.5 ounces of 

usable marijuana and 12 marijuana plants for each qualifying patient, including the 

caregiver if he or she is also a registered qualifying patient acting as his or her own 

caregiver.

54 When a qualifying patient cultivates his or her own marijuana for medical 

 54 For example, a registered qualifying patient who is his or her own caregiver and the 

caregiver to five other qualifying patients is allowed to possess up to 72 marijuana plants 

and up to 15 ounces of usable marijuana. If that individual actually possessed 73 
23

use and is not connected with a caregiver, the patient is limited to 2.5 ounces of usable 

marijuana and 12 marijuana plants. A qualifying patient or primary caregiver in 

possession of more marijuana than allowed under § 4(a) and § 4(b) at the time of the 

charged offense cannot satisfy the second element of immunity. 

The third element of § 4 immunity requires all marijuana plants possessed by a 

qualifying patient or primary caregiver to be kept in an enclosed, locked facility. Thus, a 

qualifying patient or primary caregiver whose marijuana plants are not kept in an 

enclosed, locked facility at the time of the charged offense cannot satisfy the third 

element and cannot receive immunity for the charged offense.

The fourth element conditions immunity on the “medical use” of marijuana, as 

defined in § 3(f). Unlike elements two and three, the fourth element does not depend on 

the defendant’s aggregate conduct. Instead, this element depends on whether the conduct 

forming the basis of each particular criminal charge involved “the acquisition, 

possession, cultivation, manufacture, use, internal possession, delivery, transfer, or 

transportation of marihuana or paraphernalia relating to the administration of marihuana 

to treat or alleviate a registered qualifying patient’s debilitating medical condition or 

symptoms associated with the debilitating medical condition.”55 Whether a qualifying 

patient or primary caregiver was engaged in the medical use of marijuana must be 

determined on a charge-by-charge basis.

 

marijuana plants or 16 ounces of usable marijuana and was charged with multiple 

marijuana-related offenses, the individual could not satisfy the second element of 

immunity under § 4 for any of the charged offenses because the individual possessed 

marijuana in excess of the volume limitations in § 4(a) and § 4(b).

55 MCL 333.26423(f).
24

While the qualifying patient or primary caregiver retains the burden of proving 

this fourth and last element of immunity, § 4(d) of the MMMA creates a rebuttable 

presumption of medical use when the qualifying patient or primary caregiver satisfies 

certain requirements.

(d) There shall be a presumption that a qualifying patient or primary 

caregiver is engaged in the medical use of marihuana in accordance with 

this act if the qualifying patient or primary caregiver:

(1) is in possession of a registry identification card; and

(2) is in possession of an amount of marihuana that does not exceed 

the amount allowed under this act. The presumption [that one is engaged in 

the medical use of marihuana] may be rebutted by evidence that conduct 

related to marihuana was not for the purpose of alleviating the qualifying 

patient’s debilitating medical condition or symptoms associated with the 

debilitating medical condition, in accordance with this act.[56]

The requirements necessary to establish the presumption of medical use mirror the first 

two elements required to establish immunity. Therefore, a qualifying patient or primary 

caregiver is entitled to the presumption of medical use in § 4(d) simply by establishing

the first two elements of § 4 immunity.57 

In sum, a qualifying patient seeking to assert the protections of § 4 must prove 

four elements by a preponderance of the evidence. A qualifying patient must prove that,

at the time of the charged offense, he or she (1) possessed a valid registry identification 

card; (2) possessed no more marijuana than allowed under § 4(a); (3) stored any 

 56 MCL 333.26424(d).

57 These elements are (1) possessing a valid registry identification card, and (2) 

complying with the volume limitations of § 4(a) and § 4(b).
25

marijuana plants in an enclosed, locked facility; and (4) was engaged in the medical use 

of marijuana. If the qualifying patient establishes the first and second elements, then a 

presumption exists that the qualifying patient was engaged in the medical use of 

marijuana, thereby establishing the fourth element.

Similarly, a primary caregiver seeking to assert the protections of § 4 must prove 

four elements by a preponderance of the evidence. A primary caregiver must prove that,

at the time of the charged offense, he or she (1) possessed a valid registry identification 

card; (2) possessed no more marijuana than allowed under § 4(b); (3) stored any 

marijuana plants in an enclosed, locked facility; and (4) was assisting connected 

qualifying patients with the medical use of marijuana. If the primary caregiver 

establishes the first and second elements, then a presumption exists that the primary 

caregiver was engaged in the medical use of marijuana, thereby establishing the fourth 

element.

c. REBUTTING THE PRESUMPTION

The presumption of the medical use of marijuana is a powerful tool for a 

defendant in asserting § 4 immunity. But this presumption is rebuttable:

The presumption [that one is engaged in the medical use of 

marihuana] may be rebutted by evidence that conduct related to marihuana

was not for the purpose of alleviating the qualifying patient’s debilitating 

medical condition or symptoms associated with the debilitating medical 

condition, in accordance with this act.[58]

 58 MCL 333.26424(d)(2).
26

According to § 4(d)(2), the presumption of the medical use of marijuana may be rebutted 

by examining “conduct related to marihuana . . . .” While the statute does not specifically 

state whose marijuana-related conduct may be used, when read in context it is clear that it 

refers to the defendant’s conduct. Stated differently, in § 4(d), only the defendant’s 

conduct may be considered to rebut the presumption of the medical use of marijuana. 

This interpretation is consistent with the purpose of § 4, which is to provide immunity 

from prosecution to a defendant who abides by certain restrictions. 

For this reason, we hold that the prosecution may not rebut a primary caregiver’s 

presumption of medical use by introducing evidence of conduct unrelated to the primary 

caregiver,

59 such as evidence that a connected qualifying patient does not actually have a 

debilitating medical condition or evidence that a connected qualifying patient used 

marijuana for nonmedical purposes. Similarly, the prosecution may not rebut a 

qualifying patient’s presumption of medical use by introducing evidence that the 

connected primary caregiver used the qualifying patient’s marijuana for nonmedical 

purposes.

60

 59 We recognize that “conduct” may be misfeasance as well as nonfeasance. Nothing in 

our holding should be interpreted to shield a primary caregiver who has actual knowledge 

that the marijuana provided to a qualifying patient is being used in a manner not 

permitted under the MMMA.

60 The MMMA requires the state to verify all information contained in an application for 

a registry identification card and to keep confidential the list of registry identification 

cards issued, except to verify the validity of such cards to law enforcement. Hartwick 

and Tuttle both argue that because of the verification and confidentiality requirements, 

the issuance of a registry identification card establishes either immunity under § 4 or, at 

least, a presumption of the medical use of marijuana under § 4(d). As we have already 

concluded, a registry identification card is only one requirement for establishing 

immunity under § 4. The verification and confidentiality provisions do not establish that 
27

We must also determine whether one or more transactions that are outside the 

scope of the MMMA may rebut the presumption of medical use for otherwise-compliant 

MMMA conduct. As noted § 4(d)(2) provides the prosecution with the ability to rebut 

this presumption.

61

In Tuttle, the Court of Appeals held that a noncompliant marijuana transaction 

negates a defendant’s ability to claim § 4 immunity as to the defendant’s entire 

marijuana-related conduct. The court determined that “§ 4 does not allow [a] defendant 

to decouple . . . illicit actions involving marijuana from . . . other[wise MMMAcompliant] marijuana-related activities . . . .”62 The court concluded that illicit 

marijuana-related conduct rebuts the § 4(d) presumption of medical use for otherwise 

MMMA-compliant conduct.63 

The prosecution agrees with the Court of Appeals, arguing that if a primary 

caregiver has provided marijuana to an unconnected individual, the presumption of 

medical use has been rebutted for all of the primary caregiver’s marijuana-related

conduct, including conduct that otherwise complies with § 4. Therefore, according to the 

prosecution, any unprotected marijuana-related conduct rebuts a defendant’s presumption 

 

a defendant has engaged in the medical use of marijuana or abided by the requisite 

volume and storage limitations of § 4(a) and § (4)(b). Simply put, a registry 

identification card, alone, does not establish § 4 immunity or a presumption of the 

medical use of marijuana under § 4(d).

61 MCL 333.26424(d)(2).

62 Tuttle, 304 Mich App at 84.

63 Id.
28

of medical use for all of the defendant’s marijuana-related conduct, regardless of its 

relevance to the charged offense.

Tuttle argues that unprotected marijuana-related conduct may only rebut the 

presumption as to otherwise protected conduct if a nexus exists between the unprotected 

conduct and the protected conduct. In Tuttle, counts I-III relate to unprotected transfers 

of marijuana from Tuttle to an unconnected patient. Tuttle agrees that this conduct is not 

protected and that there is no § 4 immunity with regard to that conduct. Counts IV-VII, 

however, relate to the marijuana being manufactured in Tuttle’s home. Tuttle argues that

the conduct in counts I-III does not necessarily affect the conduct underlying counts IVVII. 

Tuttle specifically stresses that § 4(d)(2) provides that the presumption of medical 

use “may” be rebutted. Tuttle relies on the word “may” for the proposition that the trial 

court in its fact-finding capacity may either reject or accept evidence presented by the 

prosecution. Therefore, Tuttle claims, the trial court is not obligated to accept evidence 

of an unrelated and unprotected transaction to rebut the presumption of medical use for 

an otherwise protected transaction.

It is clear, as Tuttle concedes, that conduct violating the MMMA directly rebuts 

the presumption of medical use when a defendant’s charges are based on that specific 

conduct (such as the illicit conduct on which counts I-III against Tuttle are based). It is 

not clear, however, that conduct violating the MMMA would also rebut the presumption 

of medical use related to other charges against the defendant when the illicit conduct does 

not form the basis of charges (such as the otherwise MMMA-compliant conduct on 

which counts IV-VII against Tuttle are based). While the statutory language is neither 
29

compelling nor expressly direct, we nonetheless conclude that the statutory text lends 

support for Tuttle’s proposition.

Use of the permissive “may,” in conjunction with the trial court’s general 

gatekeeping responsibility to admit only relevant evidence,64 leads us to conclude that to 

rebut the presumption of medical use the prosecution’s rebuttal evidence must be 

relevant, such that the illicit conduct would allow the fact-finder to conclude that the 

otherwise MMMA-compliant conduct was not for the medical use of marijuana. In other 

words, the illicit conduct and the otherwise MMMA-compliant conduct must have a 

nexus to one another in order to rebut the § 4(d) presumption. This is consistent with the 

conclusions that the fourth element of immunity—medical use—is dependent only on the 

conduct forming the basis for each particular criminal charge and that immunity is 

claimed and generally proved on a charge-by-charge basis. 

Further, Tuttle’s view not only has statutory support, but also comports with how 

generally a presumption should be rebutted. Only relevant evidence that allows the factfinder to conclude that the underlying conduct was not for “medical use” may rebut the 

§ 4(d) presumption. A wholly unrelated transaction—i.e., a transaction with no nexus, 

and therefore no relevance, to the conduct resulting in the charged offense—does not 

assist the fact-finder in determining whether the defendant actually was engaged in the 

medical use of marijuana during the charged offense. Conduct unrelated to the charged 

offense is irrelevant and does not rebut the presumption of medical use.

 64 See MRE 401 and MRE 402.
30

Therefore, under § 4(d)(2), the prosecution may rebut the presumption of medical 

use for each claim of immunity. Improper conduct related to one charged offense may 

not be imputed to another charged offense unless the prosecution can establish a nexus 

between the improper conduct and the otherwise MMMA-compliant conduct. The trial 

court must ultimately determine whether a defendant has established by a preponderance 

of the evidence that he or she was engaged in the medical use of marijuana. The 

defendant may do so by establishing this powerful presumption of medical use. If the 

presumption of medical use has been rebutted, however, the defendant may still prove 

through other evidence that, with regard to the underlying conduct that resulted in the 

charged offense and for which the defendant claims immunity, the defendant was 

engaged in the medical use of marijuana, as defined in § 3(f).

C. SECTION 8 DEFENSE

Section 8(a) of the MMMA provides any patient or primary caregiver—regardless 

of registration with the state—with the ability to assert an affirmative defense to a 

marijuana-related offense. The affirmative defense “shall be presumed valid where the 

evidence shows”:

(1) A physician has stated that, in the physician’s professional 

opinion, after having completed a full assessment of the patient’s medical 

history and current medical condition made in the course of a bona fide 

physician-patient relationship, the patient is likely to receive therapeutic or 

palliative benefit from the medical use of marihuana to treat or alleviate the 

patient’s serious or debilitating medical condition or symptoms of the 

patient’s serious or debilitating medical condition;

(2) The patient and the patient’s primary caregiver, if any, were 

collectively in possession of a quantity of marihuana that was not more than 

was reasonably necessary to ensure the uninterrupted availability of 

marihuana for the purpose of treating or alleviating the patient’s serious or 
31

debilitating medical condition or symptoms of the patient’s serious or 

debilitating medical condition; and

(3) The patient and the patient’s primary caregiver, if any, were 

engaged in the acquisition, possession, cultivation, manufacture, use, 

delivery, transfer, or transportation of marihuana or paraphernalia relating 

to the use of marihuana to treat or alleviate the patient’s serious or 

debilitating medical condition or symptoms of the patient’s serious or 

debilitating medical condition.[65]

In Kolanek, we determined that if a defendant establishes these elements and no 

question of fact exists regarding these elements, then the defendant is entitled to dismissal 

of the criminal charges.66 We also clarified that if questions of fact exist, then “dismissal 

of the charges is not appropriate and the defense must be submitted to the jury.”67 

Additionally, if a defendant has not presented prima facie evidence of each element of § 8 

by “present[ing] evidence from which a reasonable jury could conclude that the 

defendant satisfied the elements of the § 8 affirmative defense, . . . then the circuit court 

must deny the motion to dismiss the charges,” and “the defendant is not permitted to 

present the § 8 defense to the jury.”68 

A defendant seeking to assert the MMMA’s statutory affirmative defense must 

present prima facie evidence for each element of § 8(a).69 Overcoming this initial hurdle 

 65 MCL 333.26428(a)(1)-(3).

66 Kolanek, 491 Mich at 416.

67 Id.

68 Id. 

69 Id. at 415-416. In Kolanek, we did not determine the standard by which a defendant 

must establish a § 8 defense. We now clarify that well-established rules of criminal 

procedure require a defendant to prove the affirmative defense by a preponderance of 

evidence. See, e.g., D’Angelo, 401 Mich at 183 (holding that the defendant has the 
32

of presenting prima facie evidence of each element is not an easy task. The elements of 

§ 8 are clearly more onerous than the elements of § 4. The statutory scheme of the 

MMMA is designed to benefit those who properly register and are meticulous in their 

adherence to the law. Presumably, a properly registered defendant facing criminal 

charges would invoke immunity under § 4. However, a § 8 defense may be pursued by 

any defendant, regardless of registration status. With this background, we consider each 

element of the § 8 affirmative defense. 

1. SECTION 8(A)(1): THE IMPRIMATUR OF THE 

PHYSICIAN-PATIENT RELATIONSHIP

Section 8(a)(1) requires a physician to determine the patient’s suitability for the 

medical use of marijuana. It provides:

(1) A physician has stated that, in the physician’s professional 

opinion, after having completed a full assessment of the patient’s medical 

history and current medical condition made in the course of a bona fide 

physician-patient relationship, the patient is likely to receive therapeutic or 

palliative benefit from the medical use of marihuana to treat or alleviate the 

patient’s serious or debilitating medical condition or symptoms of the 

patient’s serious or debilitating medical condition[.][70]

This provision may be reduced to three elements:

(1) The existence of a bona fide physician-patient relationship,

(2) in which the physician completes a full assessment of the patient’s 

medical history and current medical condition, and

 

burden of proving entrapment by a preponderance of the evidence). Thus, when the § 8 

affirmative defense is submitted to a fact-finder, the defendant’s burden of proof is to 

establish the elements of § 8(a) by a preponderance of the evidence.

70 MCL 333.26428(a)(1).
33

(3) from which results the physician’s professional opinion that the patient 

has a debilitating medical condition and will likely benefit from the medical 

use of marijuana to treat the debilitating medical condition.

Each of these elements must be proved in order to establish the imprimatur of the 

physician-patient relationship required under § 8(a)(1) of the MMMA. Hartwick and 

Tuttle argue that the registry identification card establishes these three elements. We do 

not find merit in this position.

As part of the process for obtaining a registry identification card, an applicant 

must submit, among other materials, a “written certification.”71 At the time of the 

offenses at issue,72 the MMMA defined a written certification as: 

[A] document signed by a physician, stating the patient’s debilitating 

medical condition and stating that, in the physician’s professional opinion, 

the patient is likely to receive therapeutic or palliative benefit from the 

medical use of marihuana to treat or alleviate the patient’s debilitating 

medical condition or symptoms associated with the debilitating medical 

condition.[73]

Thus, at the time of the offenses at issue, a written certification was a document prepared 

by a physician that contained at least two representations: (1) the patient has a debilitating 

medical condition, and (2) the patient will likely benefit from the medical use of 

marijuana. Further, MCL 333.26426(c) provides that the department “shall verify the 

 71 MCL 333.26426(a)(1). 

72 In 2012, the Legislature garnered sufficient votes to satisfy the three-fourths super 

majority required to amend a voter-enacted initiative and amended the MMMA to include 

the additional requirement that the physician conducted a full, in-person assessment of 

the patient. See 2012 PA 512, effective April 1, 2013.

73 Former MCL 333.26423(l). “Written certification” has since been amended and 

renumbered as § 3(m). See 2012 PA 512, effective April 1, 2013.
34

information contained in an application” and that the department “may deny an 

application . . . only if the applicant did not provide the information required pursuant to 

this section, or if the department determines that the information provided was falsified.” 

Comparing the definition of “written certification” with the elements of § 8(a)(1), 

a registry identification card satisfies the third element (the patient has a debilitating 

medical condition and would likely benefit from the medical use of marijuana). A 

registry identification card, however, does not establish the second element (a physician 

has completed a full assessment of the patient’s medical history and current medical 

condition).74 The second element must be established through medical records or other 

evidence submitted to show that the physician actually completed a full assessment of the 

patient’s medical history and current medical condition before concluding that the patient 

is likely to benefit from the medical use of marijuana and before the patient engages in 

the medical use of marijuana. Additionally, the physician certification leaves unsatisfied

the first element of § 8(a)(1) (the existence of a bona fide physician-patient relationship). 

At the time of the offenses at issue, the MMMA did not define “bona fide 

physician-patient relationship.”75 In Kolanek, we stated that “this term envisions ‘a pre-

 74 We note that registry identification cards issued on or after April 1, 2013, the effective 

date of 2012 PA 512, establish the second element. See note 72 of this opinion.

75 The MMMA has since been amended by 2012 PA 512, effective April 1, 2013, to 

define a “bona fide physician-patient relationship.” 

“Bona fide physician-patient relationship” means a treatment or 

counseling relationship between a physician and patient in which all of the 

following are present:

(1) The physician has reviewed the patient’s relevant medical 

records and completed a full assessment of the patient’s medical history 
35

existing and ongoing relationship with the patient as a treating physician.’ ”76 Thus, to 

satisfy the first element—the existence of a bona fide physician-patient relationship—

there must be proof of an actual and ongoing physician-patient relationship at the time the 

written certification was issued.77

 

and current medical condition, including a relevant, in-person, medical 

evaluation of the patient.

(2) The physician has created and maintained records of the patient’s 

condition in accord with medically accepted standards.

(3) The physician has a reasonable expectation that he or she will 

provide follow-up care to the patient to monitor the efficacy of the use of 

medical marihuana as a treatment of the patient’s debilitating medical 

condition.

(4) If the patient has given permission, the physician has notified the 

patient’s primary care physician of the patient’s debilitating medical 

condition and certification for the use of medical marihuana to treat that 

condition. [MCL 333.26423(a).]

76 Kolanek, 491 Mich at 396 n 30 (quoting a joint statement by the Michigan Board of 

Medicine and the Michigan Board of Osteopathic Medicine and Surgery).

77 We acknowledge that the actual text of the physician’s statement submitted as part of 

the registration process might suffice. Although hearsay, the physician’s written 

certification is a “report of . . . occurrences, events, conditions, opinions, or diagnoses, 

made at or near the time by . . . a person with knowledge [that is] kept in the course of a 

regularly conducted business activity [and is a] regular practice of that business activity 

to make . . . .” MRE 803(6). That physicians are required by statute to prepare a 

certificate to recommend the medical use of marijuana tends to establish that the 

certificate is prepared in regular practice. Moreover, nothing prevents a physician from 

including a statement in the written certificate indicating that it was prepared in the 

course of a bona fide physician-patient relationship or indicating the physician’s 

recommendation as to the particular amount of marijuana. Likewise, nothing prevents 

the department from revising the physician certification to attest to these elements. Nor 

does anything prevent another individual from creating his or her own written 

certification acceptable to the department. Accordingly, the written certification could

itself provide prima facie evidence of the elements of § 8(a). Further, a defendant may 
36

A primary caregiver has the burden of establishing the elements of § 8(a)(1) for

each patient to whom the primary caregiver is alleged to have unlawfully provided 

marijuana. In this context, a primary caregiver who provides marijuana to a putative 

patient plainly assumes the risk that the patient does not actually meet the elements of 

§ 8(a)(1) or that the patient may not cooperate in a subsequent prosecution of the primary

caregiver, regardless what that person may have otherwise told the primary caregiver.

78

2. SECTION 8(a)(2): THE QUANTITY OF MARIJUANA

Section 8(a)(2) requires a patient or primary caregiver to show:

The patient and the patient’s primary caregiver, if any, were 

collectively in possession of a quantity of marihuana that was not more than 

was reasonably necessary to ensure the uninterrupted availability of 

marihuana for the purpose of treating or alleviating the patient’s serious or 

debilitating medical condition or symptoms of the patient’s serious or 

debilitating medical condition[.][79]

 

present patient testimony or other evidence to satisfy his or her burden of presenting 

prima facie evidence of the elements of § 8(a). A defendant who submits proper 

evidence would not likely need his or her physician to testify to establish prima facie 

evidence of any element of § 8(a).

78 Because “[p]ossession, manufacture, and delivery of marijuana remain punishable 

offenses under Michigan law,” Kolanek, 491 Mich at 394, a caregiver-defendant’s patient 

might be unwilling to testify to the patient’s marijuana-related activities due to fear of 

criminal prosecution. This would present a significant barrier to the caregiver’s ability to 

establish a defense under § 8. And because a witness cannot be compelled to give 

testimony that the witness reasonably believes could be used against him or her in a 

criminal prosecution, a patient’s justified refusal to cooperate might prove fatal to the

primary caregiver’s § 8 defense. See Hoffman v United States, 341 US 479, 486; 71 S Ct 

814; 95 L Ed 1118 (1951) (“It is for the court to say whether [the witness’s] silence is 

justified.”). While this may seem a harsh consequence, this Court has no power to alter 

the statutory language.

79 MCL 333.26428(a)(2).
37

The critical phrase from the above quoted passage is “reasonably necessary to 

ensure uninterrupted availability of marihuana [for treatment] . . . .” Hartwick and Tuttle 

maintain that a registry identification card establishes a presumption that any amount of 

marijuana possessed by a defendant is a reasonable amount of marijuana under the 

MMMA. In the alternative, they argue that a valid registry identification card, coupled 

with compliance with the volume limitations in § 4, establishes a presumption that the 

amount of marijuana possessed is reasonable. Again, we do not find support for the 

defendants’ position in the text of the MMMA.

The issuance of a registry identification card or compliance with the volume 

limitations in § 4 does not show that an individual possesses only a “reasonably 

necessary” amount of marijuana “to ensure uninterrupted availability” for the purposes of 

§ 8(a)(2). A registry identification card simply qualifies a patient for the medical use of 

marijuana. It does not guarantee that an individual will always possess only the amount 

of marijuana allowed under the MMMA. 

Further, nothing in the MMMA supports the notion that the quantity limits found 

in the immunity provision of § 4 should be judicially imposed on the affirmative defense 

provision of § 8. Sections 4 and 8 feature contrasting statutory language intended to 

serve two very different purposes.80 Section 4 creates a specific volume limitation 

applicable to those seeking immunity. In contrast, § 8 leaves open the volume limitation 

to that which is “reasonably necessary.” The MMMA could have specified a specific 

 80 Section 4 grants broad immunity from arrest or prosecution, while § 8 provides for an 

affirmative defense during a prosecution.
38

volume limitation in § 8, but it did not. In the absence of such an express limitation, we 

will not judicially assign to § 8 the volume limitation in § 4 to create a presumption of 

compliance with § 8(a)(2). Indeed, the only instance in which a primary caregiver must 

control a patient’s dosage is when he or she is the parent of a minor patient.81 That the 

statute requires these particular caregivers to control a patient’s dosage, but does not 

require it of others, indicates that all other caregivers need not be particularly aware of 

their patients’ medical needs. Instead, a primary caregiver may reasonably rely on the 

amount his or her patient states is needed to treat the patient’s debilitating medical 

condition.

A patient seeking to assert a § 8 affirmative defense may have to testify about 

whether a specific amount of marijuana alleviated the debilitating medical condition and

if not, what adjustments were made to the consumption rate and the amount of marijuana 

consumed to determine an appropriate quantity. Once the patient establishes the amount 

of usable marijuana needed to treat the patient’s debilitating medical condition, 

determining whether the patient possessed “a quantity of marihuana that was not more 

than was reasonably necessary to ensure [its] uninterrupted availability” also depends on 

how the patient obtains marijuana and the reliability of this source. This would 

necessitate some examination of the patient/caregiver relationship. 

The same analysis applies to primary caregivers seeking to present a defense under 

§ 8. Primary caregivers must establish the amount of usable marijuana needed to treat 

their patients’ debilitating medical conditions and then how many marijuana plants the 

 81 MCL 333.26426(b)(3)(C).
39

primary caregiver needs to grow in order ensure “uninterrupted availability” for the 

caregiver’s patients. This likely would include testimony regarding how much usable 

marijuana each patient required and how many marijuana plants and how much usable 

marijuana the primary caregiver needed in order to ensure each patient the “uninterrupted 

availability” of marijuana.

3. SECTION 8(a)(3): THE USE OF MARIJUANA FOR A MEDICAL PURPOSE

Section 8(a)(3) requires a patient or primary caregiver to show:

The patient and the patient’s primary caregiver, if any, were engaged 

in the acquisition, possession, cultivation, manufacture, use, delivery, 

transfer, or transportation of marihuana or paraphernalia relating to the use 

of marihuana to treat or alleviate the patient’s serious or debilitating 

medical condition or symptoms of the patient’s serious or debilitating 

medical condition.

[82]

Although there is a purposeful distinction made between the amount of marijuana 

permitted under § 4 and the “reasonably necessary” restraint on quantity found in 

§ 8(a)(2), § 8(a)(3) requires a patient and primary caregiver to show that any marijuana 

use complied with a very similar “medical use” requirement found in § 4, and defined in 

§ 3:

“Medical use” means the acquisition, possession, cultivation, 

manufacture, use, internal possession, delivery, transfer, or transportation 

of marihuana or paraphernalia relating to the administration of marihuana 

to treat or alleviate a registered qualifying patient’s debilitating medical 

condition or symptoms associated with the debilitating medical 

condition.[83]

 82 MCL 333.26428(a)(3).

83 MCL 333.26423(f).
40

The slight variance between the definition of “medical use” in § 4 and medical use 

as it appears in § 8 can be attributed to the fact that only registered qualifying patients 

and registered primary caregivers may engage in the “medical use” of marijuana, as 

indicated by use of the term in § 4.

84 Those patients and primary caregivers who are not 

registered may still be entitled to § 8 protections if they can show that their use of 

marijuana was for a medical purpose—to treat or alleviate a serious or debilitating 

medical condition or its symptoms. Hartwick and Tuttle again argue that a registry 

identification card alone, or a registry identification card coupled with compliance with 

either the volume limitations of § 4(a) and (4)(b) or § 8(a)(2), satisfies § 8(a)(3). Once 

again, defendants seek to attribute greater significance to the registry identification card 

than that which is expressly provided in the MMMA. We simply do not find support for 

the defendants’ arguments in the text of the MMMA.

A registry identification card merely qualifies a patient for the medical use of 

marijuana. It does not establish that at the time of the charged offense, the defendant was 

actually engaged in the protected use of marijuana. Section 8(a)(3) requires that both the 

patient’s and the primary caregiver’s use of marijuana be for a medical purpose, and that 

their conduct be described by the language in § 8(a)(3). Thus, patients must present 

prima facie evidence regarding their use of marijuana for a medical purpose regardless

whether they possess a registry identification card. Primary caregivers would also have 

 84 The definition in § 4 includes “internal possession” and specifies that the patient is a 

registered qualifying patient. The permitted uses in § 8 do not include “internal 

possession,” and the requirements apply to “patients” who are not necessarily registered.
41

to present prima facie evidence of their own use of marijuana for a medical purpose and 

any patients’ use of marijuana for a medical purpose.

III. APPLICATION TO HARTWICK AND TUTTLE

A. PEOPLE V HARTWICK

1. SECTION 4 IMMUNITY

Hartwick is a registered qualifying patient, his own caregiver, and at all times 

pertinent to this dispute, a primary caregiver to five registered qualifying patients. The 

prosecuting attorney charged Hartwick with manufacturing marijuana and possession of 

marijuana with the intent to deliver. Hartwick sought to invoke § 4 immunity. In order 

to qualify for § 4 immunity, Hartwick must prove by a preponderance of the evidence 

that for each charged offense he 

(1) possessed a valid registry identification card for himself as a 

qualifying patient and for each of the five other connected registered 

qualifying patients,

(2) possessed no more than 72 marijuana plants and 15 ounces of 

usable marijuana,

85

(3) kept the marijuana plants in an enclosed, locked facility, and 

(4) was engaged in the medical use of marijuana. 

Hartwick is entitled to a presumption of the medical use of marijuana if he shows 

by a preponderance of the evidence that he possessed:

 85 As a registered qualifying patient, Hartwick may possess up to 12 marijuana plants and 

2.5 ounces of usable marijuana. As a primary caregiver, Hartwick may possess up to 12 

marijuana plants and 2.5 ounces of usable marijuana for each connected registered 

qualifying patient.
42

(1) a valid registry identification card for himself as a patient and for 

each of the five other registered qualifying patients to whom he is 

connected under the MMMA, and 

(2) no more than 72 marijuana plants and 15 ounces of usable 

marijuana.

The prosecution may then rebut this presumption in accordance with § 4(d)(2).

The lower courts erred with respect to Hartwick’s entitlement to immunity under 

§ 4. There is no statutory requirement under § 4 that Hartwick know the debilitating 

conditions of, the amount of marijuana needed for, the length of time treatment should 

continue for, or the identities of the physicians of, the registered qualifying patients to 

whom Hartwick is connected under the MMMA. This lack of information cannot be 

used to rebut Hartwick’s presumption of the medical use of marijuana under § 4(d). For 

purposes of § 4, the lower courts should have instead focused on Hartwick’s conduct.

The Court of Appeals also should not have determined that the number of 

marijuana plants Hartwick possessed was “moot.”86 The trial court never made a factual 

determination of the number of marijuana plants in Hartwick’s possession or the other 

elements of § 4. Even if such facts had been established, the Court of Appeals reviews

the trial court’s factual findings for clear error. Thus, a new § 4 evidentiary hearing 

conforming to the holdings expressed in this opinion is necessary to determine 

Hartwick’s entitlement to § 4 immunity.

 86 Hartwick, 303 Mich App at 259.
43

2. SECTION 8 DEFENSE

In contrast to Hartwick’s claim of immunity under § 4, the lower courts correctly 

concluded that Hartwick was not entitled to the § 8 affirmative defense. Even though

Hartwick provided testimony of his own medical condition and evidence of registry 

identification cards for himself and five patients, he did not present prima facie evidence 

for each element of § 8(a). Specifically, Hartwick failed to provide any evidence of 

§ 8(a)(1) (bona fide physician-patient relationship), § 8(a)(2) (amount of marijuana the 

patients needed), or § 8(a)(3) (whether the patients engaged in the use of marijuana for a 

medical purpose).

Further, to the extent the Court of Appeals determined that a written certification 

was comparable to a pharmaceutical prescription, this determination was erroneous. A

written certification is not similar to that of a pharmaceutical prescription. Marijuana is a 

Schedule 1 controlled substance.87 Therefore, a doctor is not legally able to prescribe 

marijuana to an individual for any reason. A written certification is a statutorily

mandated document that must meet specific statutory requirements so that an individual 

may successfully apply for a registry identification card. While the MMMA states that 

“[m]odern medical research . . . has discovered beneficial uses for marihuana in 

treating . . . debilitating medical conditions,”88 the terminology employed in the MMMA 

and the actual function of primary caregivers and patients is not comparable to how a 

 87 See MCL 333.7212(c).

88 MCL 333.26422(a).
44

medical doctor’s treatment of an actual patient. Primary caregivers carry out a statutorily

created task that is completely unrelated to how a doctor would treat a patient.

B. PEOPLE V TUTTLE

1. SECTION 4 IMMUNITY

Tuttle is a registered qualifying patient, his own caregiver, and a primary caregiver 

to at least one registered qualifying patient. The prosecuting attorney charged Tuttle with 

multiple counts of manufacturing, possessing, and delivering marijuana. Tuttle sought to 

have counts IV-VII, which relate to the manufacture and possession of marijuana in 

Tuttle’s home, dismissed under the immunity provisions of § 4. 

In order to qualify for immunity under § 4, Tuttle must prove by a preponderance 

of the evidence that for each charged offense he:

(1) possessed a valid registry identification card for himself as a 

qualifying patient and for each connected registered qualifying patient, 

(2) possessed no more than the volume of marijuana permitted by 

§ 4(a) and § 4(b),89

(3) kept the marijuana plants in an enclosed, locked facility, and 

(4) was engaged in the medical use of marijuana. 

 89 It is unclear in the record exactly how many qualifying patients Tuttle was connected 

to under the MMMA. Without that information, we are unable to determine how many 

marijuana plants and how much usable marijuana Tuttle was allowed to possess under 

§ 4(a) and § 4(b). If Tuttle was his own caregiver and the primary caregiver to two other 

qualifying patients, then Tuttle would be permitted to possess no more than a total of 36 

marijuana plants. Under those facts Tuttle would not be entitled to § 4 immunity for any 

charged offense if he possessed more than 36 marijuana plants.
45

Tuttle is entitled to a presumption that he was engaged in the medical use of marijuana if

he shows by a preponderance of the evidence that he possessed: 

(1) a valid registry identification card for himself as a patient and for 

each connected registered qualifying patient, and 

(2) no more than the volume of marijuana allowed by § 4(a) and 

§ 4(b). 

The prosecution may then rebut this presumption in accordance with § 4(d)(2). 

The lower courts erred when they concluded that Tuttle’s provision of marijuana 

to Lalonde necessarily tainted all of Tuttle’s marijuana-related activity thereby negating 

his ability to claim § 4 immunity for each charged offense. Providing marijuana to 

Lalonde did not per se taint all of Tuttle’s marijuana-related conduct. Tuttle was not 

connected to Lalonde under the MMMA. Therefore, Tuttle was clearly outside the 

parameters of § 4 when he provided marijuana to Lalonde (counts I-III). 

Tuttle, however, may still be entitled to immunity for the remaining charges in 

counts IV-VII. With regard to the charges of possessing and manufacturing marijuana in 

his home, the trial court must make factual determinations regarding the number of 

patients connected to Tuttle under the MMMA, the number of marijuana plants Tuttle 

had in his home and the amount of usable marijuana Tuttle possessed,

90 whether the 

marijuana plants were stored in an enclosed, locked facility, and whether Tuttle was 

engaged in the medical use of marijuana.

 90 Subject to the exclusion of “any incidental amount of seeds, stalks, [or] unusable 

roots . . . .” MCL 333.26424(4)(a) and (4)(b)(3).
46

Tuttle must prove entitlement to immunity for each charged offense. And the 

prosecution may only use evidence of conduct relating to one charged offense to rebut the 

presumption of medical use for another charged offense if a nexus exists between the 

charged offenses. Put simply, improper conduct related to Lalonde in counts I-III may 

only affect counts IV-VII if the prosecution can establish a nexus between the improper 

conduct in counts I-III and the otherwise MMMA-compliant conduct in counts IV-VII. 

Only if this nexus exists can the trial court determine that the illicit conduct in counts I-III 

rebuts the presumption that Tuttle was engaged in the medical use of marijuana for the 

conduct underlying counts IV-VII.

The trial court must ultimately weigh the evidence to determine if the prosecution 

successfully rebutted Tuttle’s presumption of medical use for counts IV-VII by evidence 

of the conduct relating to marijuana in counts I-III and, if so, whether Tuttle has 

otherwise shown that the charged conduct for which he claims immunity was consistent 

with the medical use of marijuana. The flexibility allowing the trial court to make this 

decision in § 4(d) permits the trial court to hear evidence to determine if Tuttle truly was 

a primary caregiver simply trying to assist patients, or if Tuttle acted outside the 

protection of the MMMA.

91

 91 Under § 4, losing the § 4(d) presumption is not fatal. Even if the prosecution 

successfully rebuts the § 4(d) presumption in counts IV-VII related to Tuttle’s 

manufacturing of marijuana for himself and any patients, Tuttle may still prove by a 

preponderance of the evidence that he satisfied the last element of § 4(a) and § (4)(b), 

which requires that he was engaged in the medical use of marijuana during the conduct 

resulting in the specific charged offense(s).
47

To that end, factual findings are needed to determine Tuttle’s entitlement to 

immunity under § 4 for counts IV-VII. As a result, a new § 4 evidentiary hearing 

conforming to the holdings expressed in this opinion is necessary to determine Tuttle’s 

entitlement to § 4 immunity.

2. SECTION 8 DEFENSE

The lower courts properly concluded that Tuttle was not entitled to the § 8 

affirmative defense. During an evidentiary hearing, Tuttle presented his registry 

identification card and the registry identification cards belonging to Michael Batke and 

Frank Colon. Lalonde, Batke, and Colon also testified at the hearing. 

Lalonde testified that he first came into contact with Tuttle through an unofficial 

internet site intended to match medical marijuana patients and caregivers. He also 

testified that he was a registered qualifying patient and that he told Tuttle he was using 

marijuana to alleviate pain. Lalonde’s testimony, however, did not meet the first and 

third element of § 8(a), requiring his condition to be diagnosed in the course of a bona 

fide physician-patient relationship through which the physician found the condition 

suitable for the medical use of marijuana. Lalonde did not testify about how much 

marijuana he needed to treat his debilitating condition under § 8(a)(2) or if he engaged in 

the use of marijuana under § 8(a)(3) to treat his debilitating condition.

Batke testified that he was a registered qualifying patient and that Tuttle was

connected to him as a registered caregiver. Batke also testified that he would call Tuttle 

every time he needed marijuana. As a result, Tuttle provided Batke with approximately 

two ounces of marijuana a month. This does not speak to the amount of marijuana Batke 
48

reasonably needed in order to treat his debilitating condition, only to the amount of 

marijuana actually provided. Nor did Batke establish that he had a bona fide relationship 

with a physician. Lastly, Colon testified that he was a registered qualifying patient, that 

he had a medical condition, and that he utilized Tuttle as a caregiver. Colon stated he 

would request between one and two ounces of marijuana each week from Tuttle. Colon

did not testify that he received a full medical assessment in the course of a bona fide 

physician-patient relationship.

Lalonde’s, Batke’s, and Colon’s testimony was deficient in establishing at least 

one element of § 8(a). Additionally, the patients’ testimony combined with their registry 

identification cards did not establish prima facie evidence under § 8(a). Therefore, Tuttle 

failed to present prima facie evidence of each element of § 8(a). The Court of Appeals 

correctly affirmed the trial court’s denial of Tuttle’s motion to dismiss under § 8 and 

correctly denied his request to present a § 8 defense at trial.

IV. CONCLUSION

In People v Hartwick, Docket No. 148444, we conclude that (1) the trial court 

must hold a new evidentiary hearing to determine Hartwick’s entitlement to immunity

under § 4, and (2) Hartwick is not entitled to an affirmative defense under § 8. 

Accordingly, we affirm the judgment of the Court of Appeals in part, reverse in part, and 

remand to the trial court for proceedings not inconsistent with this opinion.

In People v Tuttle, Docket No. 148971, we conclude that (1) the trial court must 

hold a new evidentiary hearing to determine Tuttle’s entitlement to immunity under § 4,
49

and (2) Tuttle is not entitled to an affirmative defense under § 8. Accordingly, we affirm 

the judgment of the Court of Appeals in part, reverse in part, and remand to the trial court 

for proceedings not inconsistent with this opinion.

Brian K. Zahra

Robert P. Young, Jr.

Stephen J. Markman

Mary Beth Kelly

Bridget M. McCormack

David F. Viviano

Richard H. Bernstein